On Thu, Mar 5, 2015 at 12:58 PM, Michael Trimarchi
<michael@xxxxxxxxxxxxxxxxxxxx> wrote:
> Hi
>
> You should find the twl4030 power script and you should have something like this
>
> static struct twl4030_ins wrst_seq[] __initdata = {
> {MSG_SINGULAR(DEV_GRP_NULL, 0x1b, RES_STATE_OFF), 2},
> {MSG_SINGULAR(DEV_GRP_P1, 0xf, RES_STATE_WRST), 15},
> {MSG_SINGULAR(DEV_GRP_P1, 0x10, RES_STATE_WRST), 15},
> {MSG_SINGULAR(DEV_GRP_P1, 0x7, RES_STATE_WRST), 0x60},
> {MSG_SINGULAR(DEV_GRP_P1, 0x19, RES_STATE_ACTIVE), 2},
> {MSG_SINGULAR(DEV_GRP_NULL, 0x1b, RES_STATE_ACTIVE), 2},
> };
>
> static struct twl4030_script wrst_script __initdata = {
> .script = wrst_seq,
> .size = ARRAY_SIZE(wrst_seq),
> .flags = TWL4030_WRST_SCRIPT,
> };
>
> static struct twl4030_script *omap3_power_scripts[] __initdata = {
> &wrst_script,
> };
>
> If I remember it was solved by some change here. In my old kernel I
> have this commit
>
> Fix the reboot at lower frequency
>
> Signed-off-by: Michael Trimarchi <michael@xxxxxxxxxxxxxxxxxxxx>
>
> diff --git a/arch/arm/mach-omap2/board-panther.c
> b/arch/arm/mach-omap2/board-panther.c
> index ad2adf3..c71fdd9 100644
> --- a/arch/arm/mach-omap2/board-panther.c
> +++ b/arch/arm/mach-omap2/board-panther.c
> @@ -368,7 +368,7 @@ static int __init panther_i2c_init(void)
> {
> omap3_pmic_get_config(&panther_twldata,
> TWL_COMMON_PDATA_MADC |
> - TWL_COMMON_PDATA_AUDIO,
> + TWL_COMMON_PDATA_AUDIO | TWL_COMMON_PDATA_POWER,
> TWL_COMMON_REGULATOR_VDAC);
>
> omap3_pmic_init("twl4030", &panther_twldata);
>
> But this apply on an old device with a newer kernel and I don't
> remember now the reason ;) Sorry.
>
> Is this an android device? (2.6.37??? is really old)
>
I have something quite different in my code:
static int __init twl4030_config_warmreset_sequence(u8 address)
{
int err;
u8 rd_data;
/* Set WARM RESET SEQ address for P1 */
err = twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER, address,
R_SEQ_ADD_WARM);
if (err)
goto out;
/* P1/P2/P3 enable WARMRESET */
err = twl_i2c_read_u8(TWL4030_MODULE_PM_MASTER, &rd_data,
R_P1_SW_EVENTS);
if (err)
goto out;
rd_data |= ENABLE_WARMRESET;
err = twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER, rd_data,
R_P1_SW_EVENTS);
if (err)
goto out;
err = twl_i2c_read_u8(TWL4030_MODULE_PM_MASTER, &rd_data,
R_P2_SW_EVENTS);
if (err)
goto out;
rd_data |= ENABLE_WARMRESET;
err = twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER, rd_data,
R_P2_SW_EVENTS);
if (err)
goto out;
err = twl_i2c_read_u8(TWL4030_MODULE_PM_MASTER, &rd_data,
R_P3_SW_EVENTS);
if (err)
goto out;
rd_data |= ENABLE_WARMRESET;
err = twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER, rd_data,
R_P3_SW_EVENTS);
out:
if (err)
pr_err("TWL4030 warmreset seq config error\n");
return err;
}
And the board is TI's board_omap3evm.c.
Ran
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